JJWalecka
Senior Member
- Location
- New England
Some RTU units have an internal disconnecting means from the factory...where in the code does it state that the factory internal disconnect meets the requirements for equipment shut down
Disconnecting means
- Thread starter JJWalecka
- Start date
JJWalecka
Senior Member
- Location
- New England
440.14 Location. Disconnecting means shall be located within sight from, and readily accessible from the air-conditioning or refrigerating equipment. The disconnecting means shall be permitted to be installed on or within the air-conditioning or refrigerating equipment.
So that means if the unit comes with one...im alset?
So that means if the unit comes with one...im alset?
James L
Senior Member
- Location
- Kansas Cty, Mo, USA
- Occupation
- Electrician
Yes, factory installed is good.
- Location
- Illinois
- Occupation
- retired electrician
Note that the disconnect must be readily accessible, so if it is behind a cover that requires a tool to open, it doesn't count as the required disconnect.
LarryFine
Master Electrician Electric Contractor Richmond VA
- Location
- Henrico County, VA
- Occupation
- Electrical Contractor
Right, it must be externally accessible.
- Location
- Illinois
- Occupation
- retired electrician
It can be internal if the cover has thumb screws.
LarryFine
Master Electrician Electric Contractor Richmond VA
- Location
- Henrico County, VA
- Occupation
- Electrical Contractor
I consider that to be accessible.
electrofelon
Senior Member
- Location
- Cherry Valley NY, Seattle, WA
But that is dangerous because if someone tightens the thumb screw with pliers, the universe will collapse into a singularity
- Location
- New Jersey
- Occupation
- Journeyman Electrician
I agree that the integral disconnect can serve as the disconnecting means for the unit but why have a heard a hundred times that the disconnecting means must removal all power to the unit. Or in other words it must be external to the unit.
electrofelon
Senior Member
- Location
- Cherry Valley NY, Seattle, WA
I think that is generally not true. Although it seems logical to have the disconnect external and detached from the unit, I dont think its ever required is it? for example, here is the 440 requirement:
440.14 Location. Disconnecting means shall be located within sight from, and readily accessible from the air-conditioning or refrigerating equipment. The disconnecting means shall be permitted to be installed on or within the air-conditioning or refrigerating equipment.
- Location
- New Jersey
- Occupation
- Journeyman Electrician
I'm hearing that it's an OSHA or some other safety requirement that the unit will have no live parts when the disconnecting means is opened.
electrofelon
Senior Member
- Location
- Cherry Valley NY, Seattle, WA
Perhaps, I don't know nuttin' 'bout that.
